Dual combustion system for combustion tube burners



22, E. ROUSSEAU DUAL COMBUSTION SYSTEM FOR COMBUSTION TUBE BURNERS 2 Sheqts-Sheet 1 Filed March 11, 1948 zvmvron. Mm

March 22?, 1949. ROUSSEAU Z,4 64,5

DUAL COMBUSTION SYSTEM FOR COMBUSTION TUBE BURNERS Filed March 11, 1948 I 2 sheets sheet 2 F i gi 2f I 552% an F 4 I I l I l I 5 INVEN TOR.

Patented Mar. 22, 1949 DUAL COMBUSTION SYSTEM FOR COMBUSTION TUBE BURNERS Edward Rousseau, J ewett City, Conn.

Application March 11, 1948, Serial No. 14,339

1 Claim.

My invention relates to improvements in liquid fuel burners of the type adapted for location in the fire box of a household range, water heater, or the like wherein the fuel is vaporized within the burner and is burned with a suitable mixture, of air.

A principal object of my invention is the provision of a liquid fuel burner which is arranged and adapted to operate on a liquid fuel such as oil and is constructed in a novel and unique manner so as to operate efficiently and economically.

The burner is adapted for use in the fire box of a household range but it will be understood that it may be used for various other purposes as well.

A common type of such a burner is one provided with one or more combustion chambers having perforated tubular walls through which air enters to mix with the oil vapor which is emitted by the fuel, the latter being usually in the form of a fuel groove, trough or other chamber in the combustion chamber, the mixture being burned in the combustion chamber and the desired flame issuing from the upper end thereof.

However burners heretofore constructed have had certain disadvantages which the present invention overcomes and which will be pointed out in the description which follows:

According to novel features of my invention, the burner includes a base having various channels and upwardly extending perforated sleeves arranged to provide inner and outer systems of cooperating components to the end that such systems are independently operable or may be operated simultaneously as may be desired.

That is to say, the inner system may be used for heating the lid of a stove or the like without the necessity of operating the outer system. This is especially desirable when it is not desired or of the outer system for purposes of heating or the like.

With the foregoing and various other novel fea tures and advantages and other objects of my invention as will become more apparent as the description proceeds, the invention consists in certain novel features of construction and in the tem for cooking purposes or the like and the use combination and arrangement of parts as will be hereinafter more particularly pointed out in the claims hereunto annexed and more fully described and referred to in connection with the accompanying drawings wherein:

Fig. 1 is a top plan view of the device of my in vention with certain parts removed for purposes' of clarity;

Fig. 2 is a broken sectional elevational view on the line 2-2 of Fig. 1;

Fig. 3 is a partial sectional elevational view on the line 33 of Fig 1;

Fig. 4 is a small scale side elevational view of the device of my invention; and

Fig. 5 is a partial sectional view to show one of the special features of my invention.

Referring to the drawings more in detail. my invention will now be more fully described and explained, like references numerals in the different figures of the drawings referring to like parts.

A base is generally indicated by Hi and it is preferably circular in shape. The base ID has a lower wall [2, an outermost peripheral rim i4 and upwardly extending sleeve supporting ribs designated by the numerals l6, i8, 20, 22 and 24 all as shown in Fig. 2. These ribs are concentrically arranged.

A hollow hub 28 is disposed centrally of the base It! as shown.

A pair of concentric inner rims 30 and 32 likewise extend upwardly from the lower wall 12 substantially as shown.

Sleeves extend upwardly from the sleeve supporting ribs and these are perforated in the usual manner substantially throughout the entire area thereof, small perforated areas only being shown in Fig. 2. Sleeve 44 extends upwardly from rib l4, sleeve 46 extends upwardly from rib I6, sleeve 48 extends upwardly from rib l8, sleeve 50 extends upwardly from rib 20, sleeve 52 extends upwardly from rib 22, and sleeve 54 extends upwardly from rib 24.

It is to be appreciated that the sleeves are preferably circular in shape to conform with the shape of the base 'end of the sleeve supporting ribs although it will be understood that the base, sleeve supporting ribs and sleeves may be of other shapes or forms.

A cap ring is supported on its inner side by a shoulder 29 on the central hub 28 and on its outer side by a bead 62 disposed around the inner wall of the sleeve 54 substantially as shown in Fig. 2.

A cap ring 64 is supported on its inner side by the top of the inner rim 30 and on its outer side by a head 68 disposed around the inner wall of the sleeve 46 substantially as shown in Fig. 2.

An inner cap 88 is provided for the innermost sleeve 54 and is adapted to be seated thereon.

An intermediate cap '12 is provided for the sleeve members 48, 50 and 52 and is adapted to be seated upon the upper extremity of sleeve 48.

An outer cap I6 is provided for the sleeve members 44 and 46 and is adapted to be seated on the upper end of the outermost sleeve 44.

A cap rin I8 is supported by the upper ends of the sleeve members 58 and 52 and a cap ring 80 is supported by the upper end of the sleeve member 46 substantially as shown.

The cap ring members 68, I2 and I6 have openings therein of any desired area.

Fuel inlets 82 and 84 are provided in the bottom wall member I2. Inlet 82 leads into a vaporizing chamber 91. Inlet 84 leads into a vaporizing chamber 92.

The other peripheral member I4 and the adjacent rib IB form a flame ring or channel 90. The rib I3 and the inner rim 38 form a vaporizing chamber or channel 92. The ribs I8 and 28 form a flame ring or channel 93. The ribs 22 and 24 form a flame ring or channel 94. The ribs 24 and 28 form a vaporizing chamber or channel 91.

Wicks of the usual form, which are not shown in the drawings for purposes of clarity, are disposed in the channels 90, 93 and 94'.

Inner rim 32 and rib I8 are spaced apart to form an upwardly extending air passageway 96 and are connected together by spacers 98.

Ribs 20 and 22 are spaced apart to form an upwardly extending air passageway I98 and are connected together by spacers I02 which have passageways I 04 therethrough. Air may flow upwardly through the passageways 96 and I00.

Inner rims 3D and 32 are in spaced relation to each other and provide a closed passageway I05 which serves as an insulation chamber for the vaporizing chamber 92.

The rib 24 has an opening therethrough which is indicated by I86 and is preferably disposed substantially diametrically opposite to the fuel inlet 82. With the inlet 82 connected to a valved fuel supply, when the same is open, fuel flows through the inlet 82 and in the direction of arrows a, through the opening I86 into the flame channel 94 and in the operation of the device the central portion of the burner quickly becomes heated so that the fuel is vaporized and air passing upwardly through the central hub 48 supports combustion in the normal manner.

The rib I6 has an openin therethrough which is indicated by I08 and is preferably disposed substantially diametrically opposite to the fuel inlet 84. With the inlet 84 connected to a valved fuel supply, when the same is open, fuel flows through the inlet 84 and in the direction of arrows b, through the opening I88 and into the flame channel 90 and in the operation of this portion of the device the outer portion of the burner quickly becomes heated so that the fuel is vaporized and air passing up through the passageways 98 and I00 supports combustion in the normal manner.

The inner heating system may be used as a unit by admitting fuel into the chamber 91 from whence it flows to the flame channel 94 and thence to the flame channel 93, through the passageways I04.

The ribs l4 and I6 and channels 90 and 92 provide an outer system wherein the flame channel 80 is outermost. Fuel delivered through inlet 84 4 takes a circuitous path through channel 92 to the outermost flame channel 90.

Either system may be operated independently of the other or the systems may be operated simultaneously.

The burner may be supported in any desired manner in equipment with which it is to be used and there may be as many burners suitably connected together, as may be desired.

From the above it will be observed that fuel may be delivered through one or both of the fuel inlets to separate chambers from which it passes in a circuitous manner to flame channels and being vaporized it mixes with air for combustion.

The construction is such that an inner system is surrounded by an outer system, each comprising fuel inlets, vaporizing chambers and flame channels all to the end that either system may be operated independently of the other or both may be operated simultaneously.

The novel construction facilitates ready and easy control of the heat, efficiency and economy inoperation and the construction is such as to make possible the easy cleaning thereof.

The invention may be embodied in other specific forms without departing from the essential characteristics thereof. Hence, the present embodiments are therefore to be considered in all respects merely as being illustrative and not as being restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description. and all modi flcations and variations as fall within the meaning and purview and range of equivalency of the appended claim are therefore intended to be embraced therein.

What it is desired to claim and secure by Letters Patent of the United States is:

A fuel burner comprising separably operable inner and outer burner systems in combination, said inner system including an inner lower wall, a central hollow hub extending upwardly from said inner lower wall, first and second and third and fourth sleeve supporting ribs extending upwardly from said inner lower wall in outwardly sequentially spaced concentric relation, said hub and said first rib forming an inner vaporizing chamber therebetween, said first and second ribs forming a first flame channel tnerebetween, said third and fourth ribs forming a second flame channel therebetween, circular perforated sleeves extending upwardly from each of said ribs, said lower wall being provided with a primary fuel inlet into said inner vaporizing chamber, said second and third ribs being spaced apart to form an upwardly extending air passageway therebetween, hollow connections between the first and second flame channels whereby fuel may flow from the primary fuel inlet and said inner vaporizing chamber through the first flame channel to the second flame channel, said outer system including an outer lower wall, outer and intermediate sleeve supporting ribs extending upwardly from said outer lower wall in outwardly sequentially spaced concentric relation outside of said inner system, a primary inner rim and a secondary inner rim forming a concentrically arranged pair extending upwardly from said outer lower wall outside of said inner system and inside of said outer system, said primary and secondary inner rims forming an insulation chamber therebetween, said primary inner rim spaced from and supportingly connected to said fourth ribs providing an upwardly extending air passageway therebetween, said secondary inner memos 5 rim and said intermediate rib forming an outer REFERENCES CITED vaporizing chamber therebetween, said outer and The following references are of record in thc intermediate ribs forming a third flame channel me f this patent: tnerebetween, circular perforated sleeves extending upwardly from said intermediate and outer 6 UNITED STATES PATENTS ribs, said outer lower wall being provided with N mb r Na -e Date a secondary fuel inlet into said outer vaporizing 1,7 2,730 L omt Nov, 25, 1930 chamber, and said intermediate rib having spaced 1,886,667 Fowler Nov. a, 1932 openings whereby fuel may flow from said second g aeirfinan et al lfyeb. 22, inlet into 5 id third fiam channel. 0 1 V e lme a e 2,247,860 Selby July 1, 1941 EDWARD ROUSSEAU. 2,447,211 Rousseau Aug. 17, 1948 

